摘要:
PROBLEM TO BE SOLVED: To provide a light source device capable of making the light of mutually different wavelength bands be incident on light guides highly efficiently, illuminating a wide range at the time of using the light guide for white light and suppressing the generation of heat in the case of using the light guide for excitation light. SOLUTION: The system control circuit 70 of a light source processor 20 reads information stored in the ROM 17 of a fluorescent observation endoscope 10. Then, the system control circuit 70 changes the focus distance of a liquid lens 100 so as to converge the diameter of the white light to the diameter of the light guide 16 for the excitation light on the base end face of the light guide 16 for the excitation light on the basis of the read information. COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To enable the light control with a very simple structure without an increase in size of an illumination apparatus which is used by attaching it to an endoscope or the like. SOLUTION: A fixed diaphragm (10) to control and output a bundle of rays which is diffused and emitted from a light source (9) at a prescribed angle and a light control mechanism (6) to move the light source (9) to come close to or go far from the fixed diaphragm (10) are installed in the illumination apparatus (7) for the light control of the illumination light which is applied to a subject of observation through a light guide (5) inserted in a probe (2) of the endoscope (1) so that the quantity of light to pass through the fixed diaphragm (10) can be increased or decreased by moving the light source (9). COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide an apparatus for obtaining a color image and a fluorescent image using the same camera and light source as white endoscopy. SOLUTION: A fluorescence endoscopy video system includes a multimode light source that produces light for color and fluorescence imaging modes. Light from the light source is transmitted through an endoscope to the tissue under observation. The system also includes a compact camera for color and fluorescence imaging. Images obtained through the endoscope are optically divided and projected onto one or more image sensors by a fixed beam splitter in the camera. Image signals from a controller are processed in the system processor/controller where a contrast enhancement function can be applied. The contrast enhancement function increases the color contrast between normal tissue and tissue suspicious for early cancer. Finally, the system also includes a calibration feature whereby the system performance can be maintained when used with different endoscopes. COPYRIGHT: (C)2005,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide an image of a subject whose intensity largely varies as an image in the state of appropriately modulated light. SOLUTION: A CCD driving circuit 31 varies a pulse-like signal and transmits the signal to a CCD 19 to vary the sensitivity of the CCD 19. A photometric circuit 36 photometers the signal outputted from the CCD 19. A sensitivity control circuit 32 controls the sensitivity of the CCD 19 by controlling the charge amplification factor of the CCD 19 based on the result of the photometry by the photometric circuit 36. A photometry correcting circuit 37 corrects the result of the photometry by the photometric circuit 36 based on the charge amplification factor from the sensitivity control circuit 32. A diaphragm control circuit 52 controls a diaphragm 51 based on the photometric signal corrected by the photometry correcting circuit 37. COPYRIGHT: (C)2005,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide an endoscope system which shows an excellent workability by enabling a user to connect tubes and cords with a main body of an endoscope in one operation. SOLUTION: The endoscope system 1 is constituted of the main body 2 of the endoscope, a light source device 3 as an external device with a light source lamp, and a suction device, a front water feed device, and a liquid feed tank 33 as fluid devices. The endoscope system 1 is equipped with a general connector 29 provided on the main body 2, both a fluid passage and a light guide as a means for transmitting light formed on the main body 2, a light guide connector 52 as an incident part for light, a fluid connector 53 as an opening for the fluid passage, a general connector receiving part 40 provided on the light source device 3, a condenser lens as a light guiding means, the tubes 31a-33a for the suction devices or the like as fluid feed pipes, and the tubes inside a unit in a pipe unit. COPYRIGHT: (C)2005,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide a light source device in which information such as a lighting time and a lighting frequency or the like of a lamp is possessed by individual lamps and in which the accurate information can be supplied. SOLUTION: This is constituted of a lamp unit 10 having the lamp to generate illumination light, a nonvolatile memory means 7 installed at the lamp unit and capable of storing the used time information of the lamp, the device main body 11 having a housing room to which the lamp unit installed with the memory means is removaly loaded, a reading means 8 installed at the device main body and capable of reading out the used time information from the memory means, a counting means 13 to count the lighting time of the lamp unit based on the used time information read out by the reading means, and a writing means 8 to write counted results counted by the counting means into the memory means. COPYRIGHT: (C)2003,JPO
摘要:
PURPOSE: To attain high accuracy in the white color balance adjustment by adjusting the intensity of the trichromatic light in the optimum state by means of the tri-color filter area setting and adjustment in terms of an electric circuit. CONSTITUTION: In terms of a lighting device 16, a rotating filter 14 obtained by arranging R, G and B light transmitting filters with different areas in a fan-shape on a light shielding frame is rotated at a constant speed, and hole detecting signals of R, G and B are outputted from a photo-interruptor 22, while an I/O amplitude ratio is inputted to a synchronous signal generator 28 set in accordance with R, G and B, thereby making the signal output into a pulse-like signal of related amplitude. A control voltage of a lamp drive current source 30 is formed out of this signal, and a lamp drive current I is changed in a staged shape, while the incident light quantity of a light source lamp 15 changes corresponding to the current I. When the area ratio of R, G and B filters 18∼20, disposed beforehand on the rotating filter 14, is decided, and when the three signal output values of the synchronous signal generator 28 is set appropriately with respect to the hole detection, the spectral sensitivity characteristic of a solid-state image pickup element 3 can be compensated. COPYRIGHT: (C)1986,JPO&Japio
摘要:
PURPOSE: To obtain a satisfactory color reproducibility without a wavelength shift with the aid of the color surface sequential lighting by making luminous light to a parallel luminous flux by means of two sets of lens systems and passing it through a rotating color filter composed of an excellent heat resistant interference filter. CONSTITUTION: A light guide 10 is mounted freely detachably and attachably on a light source device 11; luminous light of a light source lamp 12 is reflected by a reflecting mirror 13, and made to an approximately parallel luminous flux by a convex lens system 14 and a concaved lens system 14 to pass through a rotating filter 16. In terms of said filter 16, respective red, green and blue transmission filters 16R, 16G and 16B are formed with a fan-like interference filter 3. When the filter 16 is rotated by a motor 18, each surface of a subject is sequentially lighted with respective colors, and a color image is displayed on a television 8. Since light is passed through the interference filter, the shift of the waveform will hardly occur, and a satisfactory color reproducibility can be realized by the color surface sequentially lighting system. COPYRIGHT: (C)1986,JPO&Japio